{"id":5612,"date":"2019-10-24T19:11:57","date_gmt":"2019-10-24T11:11:57","guid":{"rendered":"https:\/\/www.hkioc.com.hk\/?page_id=5612"},"modified":"2025-03-31T15:57:02","modified_gmt":"2025-03-31T07:57:02","slug":"magnetic-resonance-imaging","status":"publish","type":"page","link":"https:\/\/www.hkioc.com.hk\/en\/screening-and-diagnosis\/magnetic-resonance-imaging\/","title":{"rendered":"Magnetic Resonance Imaging"},"content":{"rendered":"<p>[vc_row][vc_column width=&#8221;1\/4&#8243;][vc_empty_space][\/vc_column][vc_column width=&#8221;1\/2&#8243;][vc_column_text]<\/p>\n<div class=\"scroll-section-wrapper\">\n<div class=\"row\">\n<div class=\"col-lg-12\"><strong>Information you can find in this article:<\/strong><\/div>\n<div class=\"col-lg-6 col-md-6 col-sm-6\"><a href=\"#section-A\">MRI Principle<\/a><\/div>\n<div class=\"col-lg-6 col-md-6 col-sm-6\"><a href=\"#section-B\">MRI Uses<\/a><\/div>\n<div class=\"col-lg-6 col-md-6 col-sm-6\"><a href=\"#section-C\">MRI Safety<\/a><\/div>\n<div class=\"col-lg-6 col-md-6 col-sm-6\"><a href=\"#section-D\">Patient safety tips prior to the examination<\/a><\/div>\n<div class=\"col-lg-6 col-md-6 col-sm-6\"><a href=\"#section-E\">Diagnosis of Cancer &#8211; Imaging Tests<\/a><\/div>\n<\/div>\n<\/div>\n<p>[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/4&#8243;][vc_empty_space][\/vc_column][\/vc_row][vc_row top_margin=&#8221;page-margin-top&#8221;][vc_column width=&#8221;1\/3&#8243;]<div class=\"services-list single\"><div class=\"service-box\"><img decoding=\"async\" width=\"480\" height=\"320\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/www.hkioc.com.hk\/wp-content\/uploads\/2019\/10\/MRI2-1-1-480x320.jpg\" class=\"attachment-medium-thumb size-medium-thumb lazyload\" alt=\"\u78c1\u529b\u5171\u632f\u6383\u63cf\u662f\u4e00\u7a2e\u5229\u7528\u78c1\u5834\u53ca\u5171\u632f\u983b\u7387\u7684\u9020\u5f71\u6280\u8853\" data-srcset=\"https:\/\/www.hkioc.com.hk\/wp-content\/uploads\/2019\/10\/MRI2-1-1-480x320.jpg 480w, https:\/\/www.hkioc.com.hk\/wp-content\/uploads\/2019\/10\/MRI2-1-1-300x200.jpg 300w, https:\/\/www.hkioc.com.hk\/wp-content\/uploads\/2019\/10\/MRI2-1-1-768x513.jpg 768w, https:\/\/www.hkioc.com.hk\/wp-content\/uploads\/2019\/10\/MRI2-1-1-1024x683.jpg 1024w, https:\/\/www.hkioc.com.hk\/wp-content\/uploads\/2019\/10\/MRI2-1-1-670x446.jpg 670w, https:\/\/www.hkioc.com.hk\/wp-content\/uploads\/2019\/10\/MRI2-1-1-600x400.jpg 600w, https:\/\/www.hkioc.com.hk\/wp-content\/uploads\/2019\/10\/MRI2-1-1-390x260.jpg 390w, https:\/\/www.hkioc.com.hk\/wp-content\/uploads\/2019\/10\/MRI2-1-1-285x190.jpg 285w, https:\/\/www.hkioc.com.hk\/wp-content\/uploads\/2019\/10\/MRI2-1-1-e1575336455194.jpg 1000w\" sizes=\"(max-width: 480px) 100vw, 480px\" \/><noscript><img decoding=\"async\" width=\"480\" height=\"320\" src=\"https:\/\/www.hkioc.com.hk\/wp-content\/uploads\/2019\/10\/MRI2-1-1-480x320.jpg\" class=\"attachment-medium-thumb size-medium-thumb lazyload\" alt=\"\u78c1\u529b\u5171\u632f\u6383\u63cf\u662f\u4e00\u7a2e\u5229\u7528\u78c1\u5834\u53ca\u5171\u632f\u983b\u7387\u7684\u9020\u5f71\u6280\u8853\" srcset=\"https:\/\/www.hkioc.com.hk\/wp-content\/uploads\/2019\/10\/MRI2-1-1-480x320.jpg 480w, https:\/\/www.hkioc.com.hk\/wp-content\/uploads\/2019\/10\/MRI2-1-1-300x200.jpg 300w, https:\/\/www.hkioc.com.hk\/wp-content\/uploads\/2019\/10\/MRI2-1-1-768x513.jpg 768w, https:\/\/www.hkioc.com.hk\/wp-content\/uploads\/2019\/10\/MRI2-1-1-1024x683.jpg 1024w, https:\/\/www.hkioc.com.hk\/wp-content\/uploads\/2019\/10\/MRI2-1-1-670x446.jpg 670w, https:\/\/www.hkioc.com.hk\/wp-content\/uploads\/2019\/10\/MRI2-1-1-600x400.jpg 600w, https:\/\/www.hkioc.com.hk\/wp-content\/uploads\/2019\/10\/MRI2-1-1-390x260.jpg 390w, https:\/\/www.hkioc.com.hk\/wp-content\/uploads\/2019\/10\/MRI2-1-1-285x190.jpg 285w, https:\/\/www.hkioc.com.hk\/wp-content\/uploads\/2019\/10\/MRI2-1-1-e1575336455194.jpg 1000w\" sizes=\"(max-width: 480px) 100vw, 480px\" \/><\/noscript><div class=\"service-details\"><h4>Magnetic Resonance Imaging<\/h4><\/div><\/div><\/div>[\/vc_column][vc_column width=&#8221;2\/3&#8243; el_class=&#8221;padding-left-30&#8243; el_id=&#8221;section-A&#8221;][vc_custom_heading text=&#8221;Ionizing radiation-free&#8221; font_container=&#8221;tag:h4|font_size:18|text_align:center|color:%235e3327|line_height:1.8&#8243; google_fonts=&#8221;font_family:Noto%20Sans%3Aregular%2Citalic%2C700%2C700italic|font_style:700%20bold%20regular%3A700%3Anormal&#8221; el_id=&#8221;section-A&#8221;][vc_custom_heading text=&#8221;MRI Principle&#8221; font_container=&#8221;tag:h2|font_size:30|text_align:center|color:%235e3327|line_height:1.8&#8243; google_fonts=&#8221;font_family:Noto%20Sans%3Aregular%2Citalic%2C700%2C700italic|font_style:700%20bold%20regular%3A700%3Anormal&#8221;][vc_separator color=&#8221;custom&#8221; border_width=&#8221;3&#8243; el_width=&#8221;10&#8243; accent_color=&#8221;#ffa800&#8243;][vc_column_text]<\/p>\n<p>Unlike other imaging modalities (X-ray, CT, PET-CT) that produce images with high energy electromagnetic radiation, Magnetic Resonance Imaging (MRI) scanner uses strong magnetic fields and gradients, and radio waves to generate images with the following uniqueness.[\/vc_column_text]<ul class=\"simple-list clearfix\"><li class=\"template-tick-2 clearfix\">\n\t\t\t<span>As an ionizing radiation-free imaging modality, MRI is particularly useful for patients who need regular scanning for close monitoring of disease progression.<br \/>\n<\/span><\/li><li class=\"template-tick-2 clearfix\">\n\t\t\t<span> The basis of MRI is the directional magnetic field generated by many free hydrogen nuclei inside a human body. When a human body is placed in a uniform magnetic field, the free hydrogen nuclei align with the magnetic field and create a net magnetic moment. The response signal is then captured by conductive field coils placed around and possessed to obtain multi-planar 3D MR images for precise diagnosis.<br \/>\n<\/span><\/li><\/p>\n<p>&nbsp;<\/p>\n<p>Below is the information regarding the uses, safety issues, concerns of undergoing a MRI examination and its advantages and limitations in comparison with other types of imaging modalities.<\/ul>[\/vc_column][\/vc_row][vc_row type=&#8221;full-width&#8221; top_margin=&#8221;page-margin-top-section&#8221; el_class=&#8221;flex-box&#8221; css=&#8221;.vc_custom_1539766293556{background-color: #ffffff !important;}&#8221;][vc_column width=&#8221;1\/2&#8243; css=&#8221;.vc_custom_1536849658368{background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}&#8221; el_class=&#8221;padding-bottom-128 column-limited&#8221;][vc_empty_space][vc_custom_heading text=&#8221;Superior tissue contrast resolution&#8221; font_container=&#8221;tag:h4|font_size:18|text_align:center|color:%235e3327|line_height:1.8&#8243; google_fonts=&#8221;font_family:Noto%20Sans%3Aregular%2Citalic%2C700%2C700italic|font_style:700%20bold%20regular%3A700%3Anormal&#8221; el_id=&#8221;section-B&#8221;][vc_custom_heading text=&#8221;MRI Uses&#8221; font_container=&#8221;tag:h2|font_size:30|text_align:center|color:%235e3327|line_height:1.8&#8243; google_fonts=&#8221;font_family:Noto%20Sans%3Aregular%2Citalic%2C700%2C700italic|font_style:700%20bold%20regular%3A700%3Anormal&#8221;][vc_separator color=&#8221;custom&#8221; border_width=&#8221;3&#8243; el_width=&#8221;10&#8243; accent_color=&#8221;#ffa800&#8243;][vc_row_inner el_class=&#8221;padding-right-100&#8243;][vc_column_inner el_id=&#8221;section-B&#8221;][vc_column_text]Comparing with other imaging modalities, MRI provides superior tissue contrast resolution, and therefore is frequently used to assess areas such as the brain, spine, ligament, joints, muscles, heart, blood vessels, breast, abdomen and pelvis. With regards to the diagnosis of cancer, MRI localises the lesion, differentiates benign from malignant soft tissue tumour of some kinds, and detects metastasis if necessary. Apart from assisting doctors make treatment plan, MRI is also used to monitor tumour progression during the entire course of treatment.<\/p>\n<p>If you are interested, please reach out to one of our staff members for an appointment.<\/p>\n<p><a class=\"whatsapp-link\" href=\"https:\/\/wa.me\/85230015994\" target=\"_blank\" rel=\"noopener noreferrer\"><i class=\"fab fa-whatsapp\"><\/i> <b>WhatsApp Contact Us<\/b><\/a>[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][\/vc_column][vc_column width=&#8221;1\/2&#8243; css=&#8221;.vc_custom_1540466200596{background-image: url(http:\/\/quanticalabs.com\/wptest\/medicenter-new\/files\/2018\/10\/placeholder.jpg?id=3750) !important;background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}&#8221;][vc_single_image image=&#8221;11676&#8243; img_size=&#8221;large-thumb&#8221;][\/vc_column][\/vc_row][vc_row el_class=&#8221;padding-top-89&#8243; css=&#8221;.vc_custom_1598585988240{background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}&#8221;][vc_column el_id=&#8221;section-C&#8221;][vc_custom_heading text=&#8221;MRI Safety&#8221; font_container=&#8221;tag:h2|font_size:30|text_align:center|color:%235e3327|line_height:1.8&#8243; google_fonts=&#8221;font_family:Noto%20Sans%3Aregular%2Citalic%2C700%2C700italic|font_style:700%20bold%20regular%3A700%3Anormal&#8221; el_id=&#8221;section-C&#8221;][vc_separator color=&#8221;custom&#8221; border_width=&#8221;3&#8243; el_width=&#8221;10&#8243; accent_color=&#8221;#ffa800&#8243;][vc_column_text]<\/p>\n<p>As a diagnostic rather than treatment modality, an MRI examination does not bring any side effects to the patients in general. Below are some proper precautions taken prior to the examination to avoid any accident.<\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li>Due to the presence of a strong magnetic field, all kinds of metallic objects, including medical implants inside the body could be attracted to the machine, causing injuries or even deaths. Therefore, patients are screened thoroughly and required to remove any metallic foreign bodies that are contraindicated before undergoing an MRI examination.<\/li>\n<li>The strong magnetic field could cause medical devices, such as hearing aid and pacemaker to malfunction. Therefore, patients are required to either take off all non-compatible devices or change to compatible ones before entering the examination room.<\/li>\n<li>The strong magnetic field could cause radiofrequency heating of human body and associated medical equipment, such as ECG lead, which may lead to skin burns. Therefore, all the equipment is checked to ensure the compatibility.<\/li>\n<li>Conventional MRI machine might create acoustic noise in rotation, which ranges from 70dB to 80dB. The harsh and strong sound could bring anxiety to patients, or even cause sudden temporary hearing loss in serious case. Therefore, ear plugs are provided for hearing protection.<\/li>\n<li>MRI contrast agents that might be injected for some examinations is generally safe without much side effects. Only for patient who are allergic to the contrast agent might experience mild side effects such as itchy skin and nausea. Less than 1% of patients might suffer from life-threatening condition due to the consequence of serious allergic reaction.<\/li>\n<li>Patient with severe kidney failure might develop nephrogenic systemic fibrosis as an adverse reaction to the contrast agents. Death, which might also occur in serious case, is rarely seen.<\/li>\n<li>Without having any scientific evidence that shows completely no effect on pregnant women in undergoing an ionizing radiation-free MRI examination, patients who are at 12 weeks pregnant or less are not advised to undergo the examination unless necessary.<\/li>\n<li>Breastfeeding patients are advised to allow 24 hours for natural excretion of contrast agent from the body before resuming breastfeeding.<\/li>\n<li>Children or patients with claustrophobia might experience stress, anxiety or even breathing difficulty. Should there be any issues, radiographers are there to provide as much assistance as possible and sedative drugs might be given if necessary.<\/li>\n<\/ul>\n<p>[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=&#8221;full-width mc-parallax&#8221; top_margin=&#8221;page-margin-top-section&#8221; parallax=&#8221;content-moving&#8221; parallax_image=&#8221;11657&#8243; css=&#8221;.vc_custom_1598530031123{background: #ffffff url(https:\/\/www.hkioc.com.hk\/wp-content\/uploads\/2020\/08\/shutterstock_742359706.jpg) !important;<br \/>\nbackground-position: center;background-repeat: no-repeat;background-size:cover !important;}&#8221; el_class=&#8221;padding-top-89 padding-bottom-100&#8243;][vc_column el_id=&#8221;section-D&#8221;][vc_custom_heading text=&#8221;Patient safety tips prior to the examination&#8221; font_container=&#8221;tag:h2|font_size:30|text_align:center|color:%23ffffff|line_height:1.8&#8243; google_fonts=&#8221;font_family:Noto%20Sans%3Aregular%2Citalic%2C700%2C700italic|font_style:700%20bold%20regular%3A700%3Anormal&#8221; el_id=&#8221;section-D&#8221;][vc_separator color=&#8221;custom&#8221; border_width=&#8221;3&#8243; el_width=&#8221;10&#8243; accent_color=&#8221;#ffffff&#8221;][vc_empty_space][vc_row_inner top_margin=&#8221;page-margin-top-section&#8221; el_class=&#8221;flex-box&#8221;][vc_column_inner width=&#8221;1\/4&#8243;]<div class=\"info-box\"><h3>\u98f2\u98df<\/h3><p>Food intake is not allowed for 4 hours before the procedure for patients undergoing magnetic resonance cholangiopancreatography; some cardiac medications should be suspended for 2 days in advance and caffeinated beverage is not allowed on the day of examination for patients undergoing cardiac MRI.<\/p><\/div>[\/vc_column_inner][vc_column_inner width=&#8221;1\/4&#8243;]<div class=\"info-box\"><h3>\u5065\u5eb7\u72c0\u6cc1<\/h3><p>Patients should inform us of any diseases such as renal insufficiency, current medications, history of drug allergy or other health conditions such as pregnancy.<\/p><\/div>[\/vc_column_inner][vc_column_inner width=&#8221;1\/4&#8243;]<div class=\"info-box\"><h3>\u96a8\u8eab\u7684\u91d1\u5c6c\u7269\u4ef6<\/h3><p>Patients are reminded to remove all metallic objects such as jewelry (earrings, rings, body piercings), personal valuables, electron devices, and asked to change into a gown before the procedure.<\/p><\/div>[\/vc_column_inner][vc_column_inner width=&#8221;1\/4&#8243;]<div class=\"info-box\"><h3>\u91d1\u5c6c\u690d\u5165\u7269<\/h3><p>Patients are screened for compatibility of metallic implants such as pacemaker, artificial heart valves, dental implants, cochlear implants, neurostimulators, intra-uterine devices before the procedure.<\/p><\/div>[\/vc_column_inner][\/vc_row_inner][vc_column_text el_class=&#8221;white align-center large&#8221;]<\/p>\n<div class=\"wpb_column vc_column_container vc_col-sm-12\">\n<div class=\"wpb_wrapper\">\n<div class=\"wpb_text_column wpb_content_element white align-center large\">\n<div class=\"wpb_wrapper\">\n<p>Should there be any issues, radiographers are there to provide as much assistance as possible.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=&#8221;padding-top-89&#8243; css=&#8221;.vc_custom_1598581786593{background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}&#8221;][vc_column el_id=&#8221;section-E&#8221;][vc_custom_heading text=&#8221;Diagnosis of Cancer&#8221; font_container=&#8221;tag:h4|font_size:18|text_align:center|color:%235e3327|line_height:1.8&#8243; google_fonts=&#8221;font_family:Noto%20Sans%3Aregular%2Citalic%2C700%2C700italic|font_style:700%20bold%20regular%3A700%3Anormal&#8221; el_id=&#8221;section-E&#8221;][vc_custom_heading text=&#8221;Imaging Tests&#8221; font_container=&#8221;tag:h2|font_size:30|text_align:center|color:%235e3327|line_height:1.8&#8243; google_fonts=&#8221;font_family:Noto%20Sans%3Aregular%2Citalic%2C700%2C700italic|font_style:700%20bold%20regular%3A700%3Anormal&#8221;][vc_separator color=&#8221;custom&#8221; border_width=&#8221;3&#8243; el_width=&#8221;10&#8243; accent_color=&#8221;#ffa800&#8243;][vc_column_text]Common tests for diagnosing cancer includes blood test, urine test, imaging test, biopsy and genetic test. Apart from diagnosing cancer, these investigations can also localise the primary site, differentiate the specific cancer cell type, perform cancer staging, identify whether there is metastasis, formulate treatment plan, monitor disease progression and detect recurrence. Below is the information regarding different tests.<\/p>\n<p>If you are interested, please reach out to one of our staff members for an appointment.<\/p>\n<p><a class=\"whatsapp-link\" href=\"https:\/\/wa.me\/85230015994\" target=\"_blank\" rel=\"noopener noreferrer\"><i class=\"fab fa-whatsapp\"><\/i> <b>WhatsApp Contact Us<\/b><\/a>[\/vc_column_text][vc_empty_space height=&#8221;20&#8243;][vc_row_inner][vc_column_inner el_class=&#8221;inner-box-wrapper&#8221; width=&#8221;1\/4&#8243; css=&#8221;.vc_custom_1599729873427{background-color: #ffffff !important;}&#8221;][vc_single_image image=&#8221;11793&#8243; img_size=&#8221;large-thumb&#8221;][vc_empty_space]<h3 class=\"box-header large align-center\">Ultrasound<\/h3>[vc_column_text css=&#8221;.vc_custom_1626772957756{padding-top: 20px !important;padding-right: 20px !important;padding-bottom: 20px !important;padding-left: 20px !important;}&#8221;]<strong>Applications\uff1a<\/strong><\/p>\n<ul>\n<li>Localize the site of primary cancer<\/li>\n<li>Guide biopsy<\/li>\n<li>Detect pathological change of tissues and vascular flow<\/li>\n<\/ul>\n<p><strong>Strengths\uff1a<\/strong><\/p>\n<ul>\n<li>No radiation is involved<\/li>\n<li>Short examination time<\/li>\n<li>Real-time monitoring of change is allowed<\/li>\n<\/ul>\n<p><strong>Limitations\uff1a<\/strong><\/p>\n<ul>\n<li>Low penetration power to deep tissues<\/li>\n<li>Low spatial resolution<\/li>\n<li>Operator-dependent result<\/li>\n<\/ul>\n<p>[\/vc_column_text][vc_btn title=&#8221;Learn more&#8221; color=&#8221;warning&#8221; align=&#8221;center&#8221; link=&#8221;url:https%3A%2F%2Fwww.hkioc.com.hk%2Fen%2Fscreening-and-diagnosis%2Fultrasound%2F||target:%20_blank|&#8221;][\/vc_column_inner][vc_column_inner el_class=&#8221;inner-box-wrapper&#8221; width=&#8221;1\/4&#8243; css=&#8221;.vc_custom_1599729879231{background-color: #ffffff !important;}&#8221;][vc_single_image image=&#8221;11796&#8243; img_size=&#8221;large-thumb&#8221;][vc_empty_space]<h3 class=\"box-header large align-center\">CT<\/h3>[vc_column_text css=&#8221;.vc_custom_1626773010260{padding-top: 20px !important;padding-right: 20px !important;padding-bottom: 20px !important;padding-left: 20px !important;}&#8221;]<strong>Applications\uff1a<\/strong><\/p>\n<ul>\n<li>Localize the site of primary cancer<\/li>\n<li>Detect pathological change of tissues<\/li>\n<li>Guide biopsy<\/li>\n<li>Allow cancer staging<\/li>\n<li>Formulate treatment plan<\/li>\n<li>Evaluate treatment effectiveness<\/li>\n<li>Detect recurrence<\/li>\n<\/ul>\n<p><strong>Strengths\uff1a<\/strong><\/p>\n<ul>\n<li>Short examination time<\/li>\n<\/ul>\n<p><strong>Limitations\uff1a<\/strong><\/p>\n<ul>\n<li>Radiation is unavoidable<\/li>\n<li>Relatively low spatial resolution for soft tissue structures such as muscle and nerve<\/li>\n<li>Risk of contrast allergy<\/li>\n<\/ul>\n<p>[\/vc_column_text][vc_btn title=&#8221;Learn more&#8221; color=&#8221;warning&#8221; align=&#8221;center&#8221; link=&#8221;url:https%3A%2F%2Fwww.hkioc.com.hk%2Fen%2Fscreening-and-diagnosis%2Fcomputed-tomography%2F||target:%20_blank|&#8221;][\/vc_column_inner][vc_column_inner el_class=&#8221;inner-box-wrapper&#8221; width=&#8221;1\/4&#8243; css=&#8221;.vc_custom_1599729899093{background-color: #ffffff !important;}&#8221;][vc_single_image image=&#8221;11799&#8243; img_size=&#8221;large-thumb&#8221;][vc_empty_space]<h3 class=\"box-header large align-center\">PET-CT<\/h3>[vc_column_text css=&#8221;.vc_custom_1626773044929{padding-top: 20px !important;padding-right: 20px !important;padding-bottom: 20px !important;padding-left: 20px !important;}&#8221;]<strong>Applications\uff1a<\/strong><\/p>\n<ul>\n<li>Localize the site of primary cancer<\/li>\n<li>Detect pathological change of tissues<\/li>\n<li>Guide biopsy<\/li>\n<li>Allow cancer staging<\/li>\n<li>Predict prognosis<\/li>\n<li>Formulate treatment plan<\/li>\n<li>Evaluate treatment effectiveness<\/li>\n<li>Detect metastasis or recurrence<\/li>\n<\/ul>\n<p><strong>Strengths\uff1a<\/strong><\/p>\n<ul>\n<li>High sensitivity in picking up cancer at early stage<\/li>\n<li>High accuracy<\/li>\n<\/ul>\n<p><strong>Limitations\uff1a<\/strong><\/p>\n<ul>\n<li>Radiation is unavoidable<\/li>\n<li>Injection of radiotracers is needed<\/li>\n<li>Might not be suitable for diabetic patients<\/li>\n<\/ul>\n<p>[\/vc_column_text][vc_btn title=&#8221;Learn more&#8221; color=&#8221;warning&#8221; align=&#8221;center&#8221; link=&#8221;url:https%3A%2F%2Fwww.hkioc.com.hk%2Fen%2Fscreening-and-diagnosis%2Fpositron-emission-tomography-pet-ct%2F||target:%20_blank|&#8221;][\/vc_column_inner][vc_column_inner el_class=&#8221;inner-box-wrapper&#8221; width=&#8221;1\/4&#8243; css=&#8221;.vc_custom_1599729909899{background-color: #ffffff !important;}&#8221;][vc_single_image image=&#8221;11802&#8243; img_size=&#8221;large-thumb&#8221;][vc_empty_space]<h3 class=\"box-header large align-center\">MRI<\/h3>[vc_column_text css=&#8221;.vc_custom_1626773077983{padding-top: 20px !important;padding-right: 20px !important;padding-bottom: 20px !important;padding-left: 20px !important;}&#8221;]<strong>Applications\uff1a<\/strong><\/p>\n<ul>\n<li>Localize the site of primary cancer<\/li>\n<li>Detect pathological change of tissues<\/li>\n<li>Differentiate benign tumor from malignant cancer<\/li>\n<li>Formulate treatment plan (i.e. localisation for surgical planning or radiation therapy)<\/li>\n<li>Monitor treatment progress<\/li>\n<li>Evaluate treatment effectiveness<\/li>\n<li>Detect recurrence<\/li>\n<\/ul>\n<p><strong>Strengths\uff1a<\/strong><\/p>\n<ul>\n<li>No radiation is involved<\/li>\n<li>Better image resolution for soft tissue structures such as muscle and nerve<\/li>\n<li>Multi-planar 2D and 3D images are available<\/li>\n<li>Contrast allergy is rare<\/li>\n<\/ul>\n<p><strong>Limitations\uff1a<\/strong><\/p>\n<ul>\n<li>Metallic object is contraindicated in a MRI suite<\/li>\n<li>Risk of claustrophobia<\/li>\n<li>Long examination time<\/li>\n<\/ul>\n<p>[\/vc_column_text][vc_btn title=&#8221;Learn more&#8221; color=&#8221;warning&#8221; align=&#8221;center&#8221; link=&#8221;url:https%3A%2F%2Fwww.hkioc.com.hk%2Fen%2Fscreening-and-diagnosis%2Fmagnetic-resonance-imaging%2F||target:%20_blank|&#8221;][\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row][vc_row top_margin=&#8221;page-margin-top&#8221; el_position=&#8221;last&#8221;][vc_column width=&#8221;2\/3&#8243;]<h3 class=\"box-header animation-slide\">Related Articles<\/h3><div class=\"columns clearfix layout-column\"><ul class=\"blog vc_col-sm-6 wpb_column vc_column_container\"><li class=\" post post-5220 type-post status-publish format-standard has-post-thumbnail hentry category-nasopharyngeal-cancer category-screening-diagnosis\"><ul class=\"comment-box clearfix\"><li class=\"date animated-element animation-slideRight\">\n\t\t\t\t\t\t\t\t<div class=\"value\">23\/06\/2025<\/div>\n\t\t\t\t\t\t\t\t<div class=\"arrow-date\"><\/div>\n\t\t\t\t\t\t\t<\/li><\/ul><div class=\"post-content\"><a class=\"post-image\" href=\"https:\/\/www.hkioc.com.hk\/en\/how-to-differentiate-between-nasopharyngeal-cancer-and-allergic-rhinitis\/\" title=\"Top 5 Symptoms of Nasopharyngeal Cancer\"><span class=\"mc-preloader\"><\/span><img decoding=\"async\" width=\"960\" height=\"500\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/www.hkioc.com.hk\/wp-content\/uploads\/2019\/10\/shutterstock_1371548546-960x500.jpg\" class=\"attachment-large-thumb size-large-thumb wp-post-image lazyload\" alt=\"Top 5 Symptoms of Nasopharyngeal Cancer\" title=\"\" \/><noscript><img decoding=\"async\" width=\"960\" height=\"500\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/www.hkioc.com.hk\/wp-content\/uploads\/2019\/10\/shutterstock_1371548546-960x500.jpg\" class=\"attachment-large-thumb size-large-thumb wp-post-image lazyload lazyload\" alt=\"Top 5 Symptoms of Nasopharyngeal Cancer\" title=\"\" \/><noscript><img decoding=\"async\" width=\"960\" height=\"500\" src=\"https:\/\/www.hkioc.com.hk\/wp-content\/uploads\/2019\/10\/shutterstock_1371548546-960x500.jpg\" class=\"attachment-large-thumb size-large-thumb wp-post-image lazyload lazyload\" alt=\"Top 5 Symptoms of Nasopharyngeal Cancer\" title=\"\" \/><\/noscript><\/noscript><\/a><h2 class=\"post-title\"><a href=\"https:\/\/www.hkioc.com.hk\/en\/how-to-differentiate-between-nasopharyngeal-cancer-and-allergic-rhinitis\/\" title=\"Top 5 Symptoms of Nasopharyngeal Cancer\">Top 5 Symptoms of Nasopharyngeal Cancer<\/a><\/h2><p class=\"post-excerpt\">The survival rate of early-stage nasopharyngeal cancer (NPC) can be up to 90% if detected through screening. Pay attention to the common symptoms and don\u2019t confuse it with allergic rhinitis.<\/p><a title=\"\u4e86\u89e3\u66f4\u591a\" href=\"https:\/\/www.hkioc.com.hk\/en\/how-to-differentiate-between-nasopharyngeal-cancer-and-allergic-rhinitis\/\" class=\"more template-arrow-horizontal-1-after\">\u4e86\u89e3\u66f4\u591a<\/a>\t\t<div class=\"post-footer clearfix\">\n\t\t\t\t\t\t\t\t<ul class=\"post-footer-details\"><li class=\"post-footer-category\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.hkioc.com.hk\/en\/category\/nasopharyngeal-cancer\/\" title=\"View all posts filed under Nasopharyngeal Cancer | About NPC Cancer\">Nasopharyngeal Cancer | About NPC Cancer<\/a>, \n\t\t\t\t\t\t\t\t\t\t<\/li><li class=\"post-footer-category\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.hkioc.com.hk\/en\/category\/screening-diagnosis\/\" title=\"View all posts filed under Cancer Screening &amp; Diagnosis | Medical Insights\">Cancer Screening &amp; Diagnosis | Medical Insights<\/a>\n\t\t\t\t\t\t\t\t\t\t<\/li><\/ul><\/div><\/div><\/li><\/ul><ul class=\"blog vc_col-sm-6 wpb_column vc_column_container\"><li class=\" post post-7785 type-post status-publish format-standard has-post-thumbnail hentry category-nasopharyngeal-cancer category-screening-diagnosis category-treatment category-category tag--en\"><ul class=\"comment-box clearfix\"><li class=\"date animated-element animation-slideRight\">\n\t\t\t\t\t\t\t\t<div class=\"value\">04\/06\/2025<\/div>\n\t\t\t\t\t\t\t\t<div class=\"arrow-date\"><\/div>\n\t\t\t\t\t\t\t<\/li><\/ul><div class=\"post-content\"><a class=\"post-image\" href=\"https:\/\/www.hkioc.com.hk\/en\/nose-bleeding-in-winter-may-be-a-sign-of-nasal-cancer\/\" title=\"Frequent nosebleeds may be a sign of nasopharyngeal cancer\"><span class=\"mc-preloader\"><\/span><img decoding=\"async\" width=\"960\" height=\"667\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/www.hkioc.com.hk\/wp-content\/uploads\/2019\/10\/nose-bleed-960x667.jpg\" class=\"attachment-large-thumb size-large-thumb wp-post-image lazyload\" alt=\"Frequent nosebleeds may be a sign of nasopharyngeal cancer\" title=\"\" \/><noscript><img decoding=\"async\" width=\"960\" height=\"667\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/www.hkioc.com.hk\/wp-content\/uploads\/2019\/10\/nose-bleed-960x667.jpg\" class=\"attachment-large-thumb size-large-thumb wp-post-image lazyload lazyload\" alt=\"Frequent nosebleeds may be a sign of nasopharyngeal cancer\" title=\"\" \/><noscript><img decoding=\"async\" width=\"960\" height=\"667\" src=\"https:\/\/www.hkioc.com.hk\/wp-content\/uploads\/2019\/10\/nose-bleed-960x667.jpg\" class=\"attachment-large-thumb size-large-thumb wp-post-image lazyload lazyload\" alt=\"Frequent nosebleeds may be a sign of nasopharyngeal cancer\" title=\"\" \/><\/noscript><\/noscript><\/a><h2 class=\"post-title\"><a href=\"https:\/\/www.hkioc.com.hk\/en\/nose-bleeding-in-winter-may-be-a-sign-of-nasal-cancer\/\" title=\"Frequent nosebleeds may be a sign of nasopharyngeal cancer\">Frequent nosebleeds may be a sign of nasopharyngeal cancer<\/a><\/h2><p class=\"post-excerpt\">While nosebleeds are more common in winter months, they can stem from a more serious problem \u2013 nasopharyngeal cancer (NPC). Other typical symptoms of NPC include persistent nosebleeds and lump(s) in the nose and lymph nodes in the neck. NPC is also known as the Guangdong province, given 80% of cases worldwide are originated in<\/p><a title=\"\u4e86\u89e3\u66f4\u591a\" href=\"https:\/\/www.hkioc.com.hk\/en\/nose-bleeding-in-winter-may-be-a-sign-of-nasal-cancer\/\" class=\"more template-arrow-horizontal-1-after\">\u4e86\u89e3\u66f4\u591a<\/a>\t\t<div class=\"post-footer clearfix\">\n\t\t\t\t\t\t\t\t<ul class=\"post-footer-details\"><li class=\"post-footer-category\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.hkioc.com.hk\/en\/category\/nasopharyngeal-cancer\/\" title=\"View all posts filed under Nasopharyngeal Cancer | About NPC Cancer\">Nasopharyngeal Cancer | About NPC Cancer<\/a>, \n\t\t\t\t\t\t\t\t\t\t<\/li><li class=\"post-footer-category\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.hkioc.com.hk\/en\/category\/screening-diagnosis\/\" title=\"View all posts filed under Cancer Screening &amp; Diagnosis | Medical Insights\">Cancer Screening &amp; Diagnosis | Medical Insights<\/a>, \n\t\t\t\t\t\t\t\t\t\t<\/li><li class=\"post-footer-category\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.hkioc.com.hk\/en\/category\/treatment\/\" title=\"View all posts filed under Treatment\">Treatment<\/a>, \n\t\t\t\t\t\t\t\t\t\t<\/li><li class=\"post-footer-category\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.hkioc.com.hk\/en\/category\/category\/\" title=\"View all posts filed under Blog\">Blog<\/a>\n\t\t\t\t\t\t\t\t\t\t<\/li><\/ul><\/div><\/div><\/li><\/ul><\/div><div class=\"show-all clearfix\"><a class=\"template-arrow-horizontal-1-after\" href=\"https:\/\/www.hkioc.com.hk\/en\/blog\/\" title=\"All Articles\">All Articles<\/a><\/div>[\/vc_column][vc_column width=&#8221;1\/3&#8243;]<h3 class=\"box-header animation-slide\">Our Screening Service<\/h3>[vc_column_text el_class=&#8221;large align-center margin-top-20&#8243;]<\/p>\n<ul>\n<li style=\"text-align: left;\"><a href=\"https:\/\/www.hkioc.com.hk\/en\/screening-and-diagnosis\/magnetic-resonance-imaging\/\" target=\"_blank\" rel=\"noopener noreferrer\">MRI<\/a><\/li>\n<li style=\"text-align: left;\"><a href=\"https:\/\/www.hkioc.com.hk\/en\/screening-and-diagnosis\/positron-emission-tomography-pet-ct\/\" target=\"_blank\" rel=\"noopener noreferrer\">PET-CT<\/a><\/li>\n<li style=\"text-align: left;\"><a href=\"https:\/\/www.hkioc.com.hk\/en\/screening-and-diagnosis\/computed-tomography\/\" target=\"_blank\" rel=\"noopener noreferrer\">CT<\/a><\/li>\n<li style=\"text-align: left;\"><a href=\"https:\/\/www.hkioc.com.hk\/en\/screening-and-diagnosis\/3d-mammography\/\" target=\"_blank\" rel=\"noopener noreferrer\">3D Mammography<\/a><\/li>\n<li style=\"text-align: left;\"><a href=\"https:\/\/www.hkioc.com.hk\/en\/screening-and-diagnosis\/ultrasound\/\" target=\"_blank\" rel=\"noopener noreferrer\">Ultrasound<\/a><\/li>\n<li style=\"text-align: left;\">X-Ray<\/li>\n<li style=\"text-align: left;\">Blood Test<\/li>\n<\/ul>\n<p>[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[vc_row][vc_column width=&#8221;1\/4&#8243;][vc_empty_space][\/vc_column][vc_column width=&#8221;1\/2&#8243;][vc_column_text] Information you can find in this article: MRI Principle MRI Uses MRI Safety Patient safety tips prior to the examination Diagnosis of Cancer &#8211; Imaging Tests [\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/4&#8243;][vc_empty_space][\/vc_column][\/vc_row][vc_row top_margin=&#8221;page-margin-top&#8221;][vc_column width=&#8221;1\/3&#8243;][\/vc_column][vc_column width=&#8221;2\/3&#8243; el_class=&#8221;padding-left-30&#8243; el_id=&#8221;section-A&#8221;][vc_custom_heading text=&#8221;Ionizing radiation-free&#8221; font_container=&#8221;tag:h4|font_size:18|text_align:center|color:%235e3327|line_height:1.8&#8243; google_fonts=&#8221;font_family:Noto%20Sans%3Aregular%2Citalic%2C700%2C700italic|font_style:700%20bold%20regular%3A700%3Anormal&#8221; el_id=&#8221;section-A&#8221;][vc_custom_heading text=&#8221;MRI Principle&#8221; font_container=&#8221;tag:h2|font_size:30|text_align:center|color:%235e3327|line_height:1.8&#8243; google_fonts=&#8221;font_family:Noto%20Sans%3Aregular%2Citalic%2C700%2C700italic|font_style:700%20bold%20regular%3A700%3Anormal&#8221;][vc_separator color=&#8221;custom&#8221; border_width=&#8221;3&#8243; el_width=&#8221;10&#8243; accent_color=&#8221;#ffa800&#8243;][vc_column_text] Unlike other imaging modalities (X-ray, CT,<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":4849,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"yst_prominent_words":[3513,3522,3521,3520,3519,3518,3517,3516,3515,3514,1032,3512,3511,3510,3435,3424,3423,2108,1208,1054],"class_list":["post-5612","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.hkioc.com.hk\/en\/wp-json\/wp\/v2\/pages\/5612","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hkioc.com.hk\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.hkioc.com.hk\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.hkioc.com.hk\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hkioc.com.hk\/en\/wp-json\/wp\/v2\/comments?post=5612"}],"version-history":[{"count":8,"href":"https:\/\/www.hkioc.com.hk\/en\/wp-json\/wp\/v2\/pages\/5612\/revisions"}],"predecessor-version":[{"id":19735,"href":"https:\/\/www.hkioc.com.hk\/en\/wp-json\/wp\/v2\/pages\/5612\/revisions\/19735"}],"up":[{"embeddable":true,"href":"https:\/\/www.hkioc.com.hk\/en\/wp-json\/wp\/v2\/pages\/4849"}],"wp:attachment":[{"href":"https:\/\/www.hkioc.com.hk\/en\/wp-json\/wp\/v2\/media?parent=5612"}],"wp:term":[{"taxonomy":"yst_prominent_words","embeddable":true,"href":"https:\/\/www.hkioc.com.hk\/en\/wp-json\/wp\/v2\/yst_prominent_words?post=5612"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}