T1-weighted images

T1-weighted images

; T1W magnetic resonance imaging (MRI) sequencing that demonstrates anatomy (i.e. fat-/hydrogen-containing structures appear white); contrast with short T1 inverse recovery imaging; STIR
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Coronal T1-weighted images (Figure 3) demonstrate decreased bone marrow signal within the hamate, including the hook.
Magnetic resonance imaging (MRI) revealed an irregularly-shaped, well-circumscribed lesion [Figure 1]a, with medium signal intensity on T1-weighted images and low signal intensity on T2-weighted images.
Superficial endometriotic lesions and endometrioma appear hyperintense on T1-weighted images when recent, or hypointense on T1-weighted images and heterogeneously hyperintense on T2-weighted images when old; however, superficial implants are rarely seen on MRI.
On T1-weighted images, the cystic wall appears slightly more hypointense to cystic content and enhances very slightly after administration of gadolinium.
Magnetic resonance imaging (MRI) revealed a well-defined and lobulated mass in the scalene muscles with a hypointense signal void on T1-weighted images (Figure 2a) and a hyperintense signal void on T2-weighted images (Figure 2b), and it showed extensive enhancement on gadolinium-enhanced T1-weighted images.
The mass was hypointense on T1-weighted images, and hyperintense with central cystic component on T2-weighted and fat-saturated T2-weighted images (Figure 1).
The sebaceous component of cystic teratoma is hyper-intense on T1-weighted images.
Oedema in the acute phase of benign fractures may replace normal bone marrow and cause hypointense signal changes in T1-weighted images and hyperintense signal changes in T2-weighted images, at the same time taking contrast material.
Neither a noncontrast cranial computerized tomography (Figure 1(a)) nor the T1-weighted images of cranial magnetic resonance imaging (MRI) revealed abnormalities like calcification.
MRI revealed a well-defined popliteal mass with low signal intensity on T1-weighted images and heterogeneous intermediate signal intensity on T2-weighted images (Figures 1(a) and 1(b)).
Increased signal intensity on T2-weighted images and decreased signal intensity on T1-weighted ones are demonstrated in almost all patients with the exception being infants and neonates where T1-weighted images show enhancement due to the similar relaxation time of T1 and the unmyelinated brain [13].