Comparison of computed tomography histogram analysis and chemical-shift magnetic resonance imaging for adrenal mass characterization

Halefoğlu, Ahmet Mesrur; Yaşar, Ahmet; Baş, Nagihan; Özel, Alper; Ertürk, Şükrü Mehmet; Başak, Muzaffer

doi:10.3109/02841850903207170

Cited by 26 publications

(27 citation statements)

References 22 publications

(26 reference statements)

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“…The third mass was small lipid-rich adenoma of the right adrenal gland in a patient with abundant retroperitoneal fat tissue. However, although small adrenal tumours can easily be misinterpreted due to partial volume effects, 21 in some instances they can be detected and characterized using imaging techniques. With technical improvement of the scanners, it can be expected that we would be able to detect and characterize more masses with diameter <1 cm, even in slim patients.…”

Section: Discussionmentioning

confidence: 99%

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Should we use CT or MRI for detection and characterization of benign adrenal lesions?

Paar

Đido

Štern-Padovan

2015

Annales d'Endocrinologie

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Section: Discussionmentioning

confidence: 99%

“…Although lesions with diameter <1 cm are usually considered to be too small to be characterized, 21 we managed to characterize all three tumours that were smaller than 1 cm.…”

Section: Discussionmentioning

confidence: 99%

Should we use CT or MRI for detection and characterization of benign adrenal lesions?

Paar

Đido

Štern-Padovan

2015

Annales d'Endocrinologie

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“…2). 43 Better studies in this area are needed because, like PET/CT, many of these series lack pathologic data, [43][44][45] have limited follow-up, [43][44][45] or include patients with portal hypertension that can affect iron content and confound subsequent ASR values within the spleen. 45 Percutaneous needle biopsy or FNA of the adrenal can be technically challenging because of the close proximity of the adrenal to the great vessels in the abdomen.…”

Section: Lung Cancer and Adrenal Metastasismentioning

confidence: 99%

“…2), this MRI technique can be limited in adenomas that are lipid-poor. 43 More modern quantitative techniques compare adrenal to signal intensities of the spleen, known as Adrenal-Spleen Chemical Shift Ratio (ASR), adding slightly more specificity using 0.71 threshold (Fig. 2).…”

Section: Lung Cancer and Adrenal Metastasismentioning

confidence: 99%

Fluorodeoxyglucose-Positron-Emission Tomography/Computed Tomography Imaging for Adrenal Masses in Patients with Lung Cancer: Review and Diagnostic Algorithm

Stone

Wymer

Canales

2014

Journal of Endourology

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Background and Purpose: Positron-emission tomography/computed tomography (PET/CT) with fluorine-18 fluorodeoxyglucose (FDG) is used as first-line staging for patients with newly diagnosed non-small cell lung cancer (NSCLC). Our purpose was to review the accuracy of FDG-PET/CT to predict adrenal gland metastasis, explain the causes for false-positive PET, and provide a diagnostic algorithm. Patients and Methods: Two patients with incidentally discovered lung masses were found to have hypermetabolic adrenal activity by FDG-PET/CT with maximal standard uptake value (SUV) of 4.5 and 6.5. A MEDLINE search was performed on the topic of FDG-PET/CT, adrenal gland metastasis, and NSCLC. Literature was reviewed with regard to diagnosis, accuracy, outcomes, and alternative imaging or diagnostic strategies. Results: Both patients underwent transabdominal laparoscopic adrenalectomy and were found to have nodular hyperplasia without evidence of adrenal tumor. A total of seven articles containing 343 patients were identified as having pertinent oncologic information for NSCLC patients with adrenal lesions. Sensitivity and specificity of PET/CT for distant metastasis was 94% and 85%, respectively, but only 13% (44/343) of these patients had histologically confirmed adrenal diagnoses. Based on this, a diagnostic algorithm was created to aid in decision making. Conclusions: Although PET/CT has high sensitivity and specificity for adrenal metastasis in the setting of NSCLC, adrenal biopsy or other secondary imaging should be considered to confirm the finding. Adrenalectomy in lieu of biopsy may have both diagnostic and therapeutic benefit in cases where the adrenal mass is ‡ 10 mm with high PET maximum SUV ( ‡ 3.1) and SUV ratios ( > 2.5), where washout CT or chemical shift MRI is positive, or where percutaneous biopsy is deemed too difficult or unsafe.

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“…One common modification of T1-weighted imaging is in-phase (IP) and out-of-phase (OP) imaging, used to detect (microscopic) fat, which signals the presence of many common diseases (16)(17)(18)(19)(20)(21)(22). At 3.0T, the shortest OP TE is 1.15 ms and the shortest IP TE is 2.3 ms.…”

mentioning

confidence: 99%

Comparison of T1‐weighted in‐ and out‐of‐phase single shot magnetization‐prepared gradient‐recalled‐echo with three‐dimensional gradient‐recalled‐echo at 3.0 tesla: Preliminary observations in abdominal studies

Ferreira¹,

Ramalho²,

Campos³

et al. 2011

Magnetic Resonance Imaging

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Purpose: To describe in-phase (IP)/out-of-phase (OP) imaging with single shot magnetization-prepared gradient-recalled-echo (MP-GRE) and to compare intra-individually IP/OP MP-GRE with IP/OP three-dimensional gradient-recalled-echo (3D-GRE) at 3.0 Tesla (T). Materials and Methods:Thirty-six subjects (15 males, 21 females; mean age 46.97 6 14.97) who had abdominal MRI examinations including precontrast T1-weighted IP/ OP MP-GRE, IP/OP 3D-GRE were included in the study. Two radiologists independently evaluated the sequences qualitatively for extent of artifacts, lesion detectability, and conspicuity and subjective grading of liver steatosis. Quantitative evaluation was performed by one radiologist and included liver fat index, liver and spleen SNR, and liver-lesion and liver-spleen CNR.Results: Respiratory ghosting was more pronounced on 3D-GRE (P < 0.0008). The degrees of parallel imaging residual artifacts, shading and blurring were significantly higher on the 3D-GRE sequences (P < 0.0008). Spatial misregistration and bounce point artifacts were only observed with MP-GRE images. Pixel graininess was more apparent on MP-GRE (P < 0.0008). Lesion detectability, confidence, and conspicuity were considerably higher on MP-GRE. Visual appreciation of steatosis was superior on 3D-GRE. Overall image quality was superior on MP-GRE (P < 0.0008). Conclusion:Higher image quality and improved lesion detectability were present with IP/OP MP-GRE technique. Inversion-recovery prepared techniques may represent an important evolution for precontrast T1-weighted image at 3.0T. The good image quality of MP-GRE sequences acquired in a free breathing manner should recommend its use in patients unable to suspend breathing.

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Comparison of computed tomography histogram analysis and chemical-shift magnetic resonance imaging for adrenal mass characterization

Cited by 26 publications

References 22 publications

Should we use CT or MRI for detection and characterization of benign adrenal lesions?

Should we use CT or MRI for detection and characterization of benign adrenal lesions?

Fluorodeoxyglucose-Positron-Emission Tomography/Computed Tomography Imaging for Adrenal Masses in Patients with Lung Cancer: Review and Diagnostic Algorithm

Comparison of T1‐weighted in‐ and out‐of‐phase single shot magnetization‐prepared gradient‐recalled‐echo with three‐dimensional gradient‐recalled‐echo at 3.0 tesla: Preliminary observations in abdominal studies

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