【涨知识】PET-CT检测前必要晓得的10件事儿！或可加强查癌准确率
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">ET-CT在肿瘤的筛查、诊断和治疗过程中扮演着<span style="color: black;">要紧</span>角色，被<span style="color: black;">叫作</span>为“查癌神器”。但做PET-CT<span style="color: black;">检测</span>有<span style="color: black;">许多</span><span style="color: black;">重视</span>事项，本文整理了<span style="color: black;">检测</span>前癌友<span style="color: black;">必要</span><span style="color: black;">晓得</span>的10个重点问题，可<span style="color: black;">帮忙</span><span style="color: black;">检测</span>顺利的进行，还可<span style="color: black;">加强</span>查癌准确率，最后一条很<span style="color: black;">重要</span>，快来<span style="color: black;">一块</span><span style="color: black;">瞧瞧</span>吧！</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="//q4.itc.cn/images01/20240510/825a60dee883487dbccace96dfab8e58.jpeg" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">1</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;"><span style="color: black;">检测</span>前能<span style="color: black;">不可</span>运动？ </strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">PET-CT<span style="color: black;">检测</span>前一天和当天不要进行剧烈运动或体力活动，如跑步（含慢跑）、骑车、举重物等，不要长距离快速步行，不要按摩，<strong style="color: blue;">以防止肌肉对葡萄糖的<span style="color: black;">太多</span>摄取影响图像质量。</strong>注射显像剂后<span style="color: black;">亦</span>不要<span style="color: black;">太多</span>运动，请在<span style="color: black;">休憩</span>室安静<span style="color: black;">休憩</span>。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">2</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;"><span style="color: black;">检测</span>前<span style="color: black;">必须</span>禁食吗？ </strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">日前</span>PET-CT常用的显像剂是18F-FDG，是一种葡萄糖类似物，其在<span style="color: black;">身体</span>的分布会受血清胰岛素水平的影响。餐后内源性胰岛素分泌<span style="color: black;">增多</span>，骨骼肌、心肌、脂肪等组织吸收葡萄糖的能力<span style="color: black;">明显</span><span style="color: black;">加强</span>，<span style="color: black;">此时</span>注射显像剂（18F-FDG），大部分会被这些组织吸收，肿瘤组织吸收的比例相对减小，肿瘤图像的对比度会降低，<span style="color: black;">有害</span>于<span style="color: black;">大夫</span>的判断。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;"><span style="color: black;">因此呢</span>PET-CT<span style="color: black;">检测</span>前应禁食4-6小时，可少量饮水（白开水或矿泉水），有<span style="color: black;">要求</span>的话，最好隔夜空腹，住院<span style="color: black;">病人</span><span style="color: black;">检测</span>当天<span style="color: black;">不可</span>输注葡萄糖溶液。</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="//q8.itc.cn/images01/20240510/88e8d053e7ea478a9ca99269f8a70693.jpeg" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">3</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">有糖尿病能做PET-CT吗？ </strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;"><span style="color: black;">能够</span>做，但有糖尿病的癌症<span style="color: black;">病人</span>在做PET-CT前需提前<span style="color: black;">掌控</span>好血糖</strong>，空腹血糖应<6.1mmol/L，<span style="color: black;">针对</span><span style="color: black;">没</span>法将血糖降至正常范围的糖尿病<span style="color: black;">病人</span>，空腹血糖值<8.3mmol/L为佳，最高不超过11.1mmol/L。在<span style="color: black;">检测</span>预约时需<span style="color: black;">通知</span>前台工作人员，<span style="color: black;">包含</span><span style="color: black;">日前</span>使用降糖<span style="color: black;">药品</span>种类、剂量和<span style="color: black;">办法</span>。<span style="color: black;">检测</span>前48h需停用二甲双胍，<span style="color: black;">检测</span><span style="color: black;">时期</span>不<span style="color: black;">运用</span>胰岛素，避免影响<span style="color: black;">检测</span>结果。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">4</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;"><span style="color: black;">身体</span>有金属<span style="color: black;">移植</span>物，能做PET-CT吗？ </strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">针对</span><span style="color: black;">身体</span>有金属<span style="color: black;">移植</span>物（如义齿、钢板、钢钉、起搏器、冠脉金属支架等）的<span style="color: black;">病人</span><span style="color: black;">能够</span>做PET-CT，<span style="color: black;">由于</span>其不会影响显像剂的摄取。但在<span style="color: black;">检测</span>前应提前<span style="color: black;">通知</span><span style="color: black;">大夫</span><span style="color: black;">关联</span><span style="color: black;">状况</span>，<span style="color: black;">以避免</span>影响诊断。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">5</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">平时用其他<span style="color: black;">药品</span>，能做PET-CT吗？ </strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">检测</span>前2周<span style="color: black;">尽可能</span>不<span style="color: black;">吃下</span><strong style="color: blue;">升白细胞<span style="color: black;">药品</span></strong>；<span style="color: black;">检测</span>前一日避免<span style="color: black;">吃下</span><strong style="color: blue;">高糖类<span style="color: black;">药品</span></strong>(如止咳糖浆)；需<span style="color: black;">长时间</span>、按时<span style="color: black;">吃下</span>的<span style="color: black;">药品</span>（如降压药、降脂药、止痛药等），<span style="color: black;">检测</span>当日可常规<span style="color: black;">吃下</span>；中药须暂停<span style="color: black;">吃下</span>。近期进行过化疗的<span style="color: black;">病人</span>，应<span style="color: black;">按照</span>病情及<span style="color: black;">检测</span>需求确定<span style="color: black;">详细</span><span style="color: black;">检测</span>时间。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="//q7.itc.cn/images01/20240510/ce68ce2e4b1b47a795906337f6044e43.jpeg" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">6</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">消化道钡餐造影后，多久能做PET-CT？</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">消化道钡剂<span style="color: black;">检测</span>后如消化道内钡剂未完全排空，易<span style="color: black;">引起</span>腹部显像时<span style="color: black;">显现</span>伪影，影响腹部病灶的诊断。<span style="color: black;">意见</span>在消化道钡剂造影<span style="color: black;">1星期</span>后再进行PET-CT<span style="color: black;">检测</span>，<span style="color: black;">病人</span>在预约时需提前<span style="color: black;">通知</span>前台工作人员。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">7</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;"><span style="color: black;">大姨妈</span><span style="color: black;">时期</span>能做PET-CT吗？ </strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">PET-CT<span style="color: black;">检测</span>肿瘤的原理不牵涉女性生理变化，女性经期生理变化对PET-CT<span style="color: black;">检测</span><span style="color: black;">无</span>影响，<span style="color: black;">因此呢</span><strong style="color: blue;"><span style="color: black;">大姨妈</span><span style="color: black;">时期</span><span style="color: black;">能够</span>做PET-CT</strong>。但<span style="color: black;">针对</span>有子宫肿瘤病史或可疑子宫病变者，最好避开<span style="color: black;">大姨妈</span>期。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">8</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;"><span style="color: black;">为何</span>PET-CT<span style="color: black;">检测</span>后，<span style="color: black;">不可</span>直接离开？</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">这是<span style="color: black;">由于</span>有少部分<span style="color: black;">病人</span><span style="color: black;">必须</span>进行二次扫描，<span style="color: black;">亦</span><span style="color: black;">便是</span><span style="color: black;">大夫</span>所说的“延迟显像”，<span style="color: black;">通常</span>是<span style="color: black;">由于</span><span style="color: black;">大夫</span>对<span style="color: black;">第1</span>次扫描<span style="color: black;">表示</span>的结果有疑问，<span style="color: black;">因此呢</span><span style="color: black;">意见</span>多次扫描图像，便于对<span style="color: black;">疾患</span>做出诊断，<span style="color: black;">加强</span>准确率。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="//q5.itc.cn/images01/20240510/c6a667446ae54f77a4b8178296fbbecc.jpeg" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">9</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">PET-CT<span style="color: black;">检测</span>时，能有其他人陪同吗？ </strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">原则上不<span style="color: black;">意见</span>其他人员或家属陪同，但70岁以上的老人、体弱、行动<span style="color: black;">不方便</span>、交流<span style="color: black;">阻碍</span>者，需由专人陪同。禁止备孕人员、孕妇或儿童陪同。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">10</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;"><span style="color: black;">为何</span>做了PET-CT还是找不到原发灶？</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">这是<span style="color: black;">由于</span>PET-CT的准确率虽然能达到90%以上，但并不是100%，存在假阴性和假阳性的<span style="color: black;">状况</span>。</strong>且其<span style="color: black;">亦</span>有局限性，对某些部位肿瘤的诊断效果不是<span style="color: black;">那样</span>理想，如脑部肿瘤、空腔脏器肿瘤。<span style="color: black;">因此呢</span>PET-CT<span style="color: black;">不可</span>完全取代CT、MRI，更<span style="color: black;">不可</span>取代病理学检测，临床中需结合PET-CT和其他<span style="color: black;">检测</span>综合进行判断。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">病人</span>在<span style="color: black;">检测</span>后应多饮水多排尿，加速放射物质的排出，12小时内<span style="color: black;">尽可能</span>避免与孕妇、小孩及年老体弱者近距离接触（大于1米距离），<span style="color: black;">以避免</span><span style="color: black;">导致</span>辐射<span style="color: black;">损害</span>。<a style="color: black;"><span style="color: black;">返回<span style="color: black;">外链论坛：http://www.fok120.com/</span>，查看<span style="color: black;">更加多</span></span></a></p>
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