Magnetic resonance imaging of parotid gland tumors: a pictorial …
2022年11月7日 · In this pictorial essay, we present images of a variety of benign and malignant parotid gland tumors and emphasize the MRI features that may be useful in their characterization and differentiation. The overview of the various figures is presented in Table 1 .
Parotid gland tumors | Radiology Reference Article - Radiopaedia.org
2024年10月15日 · Parotid gland tumors most commonly present as lumps in the preauricular region, over or behind the angle of the mandible. Perineural spread may result in ticks in the muscles of facial expression, neurogenic pain or weakness 1 .
MR Imaging of Parotid Tumors: Typical Lesion Characteristics in …
2011年8月1日 · We analyzed the following MR imaging parameters: signal intensity, contrast enhancement, lesion margins (well-defined versus ill-defined), lesion location (deep/superficial lobe), growth pattern (focal, multifocal, or diffuse), and extension into neighboring structures, perineural spread, and lymphadenopathy.
Differential diagnosis of parotid gland tumours: which magnetic ...
The following MRI parameters were evaluated: shape, site, size, margins, signal intensity (SI) on T1w and T2w images, contrast enhancement, signal of cystic content, presence or absence of a capsule, perineural spread, extraglandular growth pattern and cervical adenopathy.
Parotid gland | Radiology Reference Article - Radiopaedia.org
2024年8月20日 · CT/MRI. CT and MRI provide useful additional diagnostic imaging if malignancy is suspected 4, with the sensitivity approaching 100% for detecting parotid neoplasms 5. the parotid duct and retromandibular vein are usually seen and approximate the plane separating the superficial and deep lobes 12. Related pathology. parotid enlargement. salivary ...
Classification of parotid gland tumors by using multimodal MRI …
2020年9月4日 · Various MRI sequences have shown their potential to discriminate parotid gland tumors, including but not limited to T 2 ‐weighted, postcontrast T 1 ‐weighted, and diffusion‐weighted images. In this study, we present a fully automatic system for the diagnosis of parotid gland tumors by using deep learning methods trained on multimodal MRI ...
We analyzed the following MR imaging parameters: signal intensity, contrast enhancement, lesion margins (well-defined versus ill-defined), lesion location (deep/superficial lobe), growth pattern (focal, multifocal, or diffuse), and extension into neighboring structures, perineural spread, and lymphadenopathy.
Multiparametric magnetic resonance imaging of parotid tumors…
2021年3月1日 · Multiparametric MRI is the imaging modality of choice for the investigation of parotid tumors. Some MRI features are highly suggestive of a specific diagnosis. Combining morphological features with diffusion-weighted imaging and dynamic-contrast enhanced imaging improves the capabilities of MRI for the diagnosis of parotid tumors.
terization of parotid tumors (i.e., benign or malignant) determines preoperative treatment planning and is important in optimizing the individualized surgical plan. Magnetic resonance imaging (MRI) is the imaging modality of choice for evaluation of suspected parotid gland lesions and dierentiation between benign and malignant lesions. Certain ...
Pictorial essay: Salivary gland imaging - PMC - PubMed Central …
Diffusion-weighted (DW) images and gadolinium-enhanced dynamic MR (Gd-MRI) imaging have proven to be very useful in differentiating benign from malignant tumors.[10,11] DW images can be used to calculate apparent diffusion coefficient (ADC) values, which are different for different salivary gland tumors. Gd-MR with dynamic imaging using 120 s ...