The preoperative localisation of small parathyroid adenomas improves when adding Tc-99m-Sestamibi SPECT to multiphase contrast-enhanced CT
| Autor: | Inga-Lena Nilsson, Jacob Farnebo, Patricia Sandqvist, P Grybäck, Anders Sundin, Alejandro Sanchez-Crespo |
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| Rok vydání: | 2021 |
| Předmět: |
Parathyroidectomy
Single-photon emission-computed tomography 4D computed tomography Adenoma medicine.medical_treatment R895-920 Single-photon emission computed tomography 030218 nuclear medicine & medical imaging Medical physics. Medical radiology. Nuclear medicine 03 medical and health sciences 0302 clinical medicine medicine Radiology Nuclear Medicine and imaging Neuroradiology Parathyroid adenoma medicine.diagnostic_test business.industry Contrast media Ultrasound medicine.disease Quartile 030220 oncology & carcinogenesis Original Article Radiologi och bildbehandling business Nuclear medicine Primary hyperparathyroidism Radiology Nuclear Medicine and Medical Imaging |
| Zdroj: | Insights into Imaging, Vol 12, Iss 1, Pp 1-9 (2021) Insights into Imaging |
| ISSN: | 1869-4101 |
| DOI: | 10.1186/s13244-021-01016-3 |
| Popis: | Objectives To investigate the incremental value of Sestamibi SPECT combined with a non-enhanced and contrast-enhanced CT, using SPECT/CT, for the preoperative localisation of small parathyroid adenomas (PTA). Methods Retrospectively, 147 patients surgically cured from primary hyperparathyroidism, as verified by biochemistry 6 months postoperatively, were included. All patients had preoperatively undergone a dual time 99mTechnetium-Sestamibi SPECT (S) with multiphase CT including native (N), arterial (A) and venous (V) phases. Independently, two radiologists blinded from both the surgical and the preoperative imaging reports, sequentially performed PTA localisation starting with either [A] or [V], thereafter [A + N] or [V + N] and finally with the complete [A + N + S] or [V + N + S]. PTA localisation was reported for each image-set. The readers results were combined and the diagnostic performance for each image set was determined. Sensitivity was also calculated for the different quartiles of PTA weight distribution. Results The median adenoma weight was 315 mg. No statistically significant differences in diagnostic performance between arterial and venous based image sets were found. The net effect of adding [N] was to increase specificity. Sestamibi SPECT significantly increased the overall diagnostic accuracy for arterial- and venous-based image sets, p = 0.0008 and p = 0.001, respectively. [A + N + S] was found to have the highest diagnostic performance with 86.5% sensitivity and 94.9% overall accuracy. [A + N + S] was particularly advantageous for locating PTA in the lower weight quartiles. Conclusions Native CT-phase and dual time point Sestamibi SPECT increase specificity and sensitivity, respectively. These, in combination with a single contrast-enhanced CT-phase is the most optimal examination protocol for preoperative localisation of PTA using SPECT/CT. |
| Databáze: | OpenAIRE |
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