Four-dimensional computed tomography for parathyroid localization: a new imaging modality.

Abstract:

INTRODUCTION:Four-dimensional computed tomography (4DCT) is a new parathyroid localization technique not previously reported in Australia. It provides both functional and anatomical imaging in a single test, with superior sensitivity compared with sestamibi scintigraphy (SeS). This study examines the utility of 4DCT in defined clinical situations. METHODS:This is a retrospective cohort study in a tertiary referral hospital setting. One hundred consecutive operative cases of primary hyperparathyroidism (99 patients) undergoing both preoperative 4DCT and SeS. Localization studies were correlated with operative findings, histopathology and clinical outcomes. The utility of 4DCT was analysed in three common clinical settings: primary cases with positive SeS (Group A, n = 68), primary cases with negative SeS (Group B, n = 21) and re-operative cases (Group C, n = 11). RESULTS:The overall sensitivity of 4DCT was 92% compared with 70% for SeS. The sensitivity of 4DCT was superior to SeS in Groups B and C (76% versus 0% and 91% versus 46%, respectively). The overall cure rate was 98%, with 94% of cases completed as minimally invasive procedures. Up to 62% of Group B cases potentially avoided a bilateral neck exploration owing to a positive 4DCT. CONCLUSIONS:4DCT is an accurate technique providing both functional and anatomical localization of abnormal parathyroid glands. However, the advantage of speed and simplicity in image acquisition needs to be balanced against the small risk of increased radiation exposure in the younger patient group.

journal_name

ANZ J Surg

journal_title

ANZ journal of surgery

authors

Brown SJ,Lee JC,Christie J,Maher R,Sidhu SB,Sywak MS,Delbridge LW

doi

10.1111/ans.12571

subject

Has Abstract

pub_date

2015-06-01 00:00:00

pages

483-7

issue

6

eissn

1445-1433

issn

1445-2197

journal_volume

85

pub_type

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