Anatomy LE 6: Intro to CT Scan
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Questions and Answers

What type of neuroimaging uses multiple x-rays taken at different angles and low doses of radiation?

  • MRI
  • PET scan
  • CT scan (correct)
  • Ultrasound

    • What is the primary difference in cost between CT scans and MRI?

  • It depends on the patient's condition
  • MRI is more expensive (correct)
  • They are equally priced
  • CT scans are more expensive

    • What should you consider before requesting an MRI?

  • The patient's financial status (correct)
  • The patient's medical condition
  • The patient's age
  • The hospital's equipment

    • What is used in MRI to produce images?

    <p>Magnetic fields and radiofrequency pulses</p> Signup and view all the answers

    In a CT scan, how does gray matter appear?

    <p>Light</p> Signup and view all the answers

    What type of scan is better at delineating structures?

    <p>MRI</p> Signup and view all the answers

    In an MRI, how does white matter appear?

    <p>Light</p> Signup and view all the answers

    What is the purpose of considering the patient's status before requesting an MRI?

    <p>To ensure the patient can afford the test</p> Signup and view all the answers

    What is the name of the type of neuroimaging that uses x-rays?

    <p>CT scan</p> Signup and view all the answers

    What is the appearance of the suprasellar cistern in a normal CT scan?

    <p>Black</p> Signup and view all the answers

    What is the function of the choroid plexus in the CSF flow?

    <p>CSF production</p> Signup and view all the answers

    What is the name of the structure that connects the third and fourth ventricles?

    <p>Cerebral aqueduct</p> Signup and view all the answers

    What is the term for the appearance of the midbrain on a CT scan?

    <p>Mickey-mouse sign</p> Signup and view all the answers

    What is the name of the structure that separates the two hemispheres of the brain?

    <p>Sylvian fissure</p> Signup and view all the answers

    What is the function of the foramen of Luschka?

    <p>CSF drainage</p> Signup and view all the answers

    What is the appearance of the suprasellar cistern in a patient with subarachnoid hemorrhage?

    <p>Off-white</p> Signup and view all the answers

    What is the structure that forms the 'ears' of the Mickey-mouse sign?

    <p>Cerebral peduncle</p> Signup and view all the answers

    What is the name of the ventricle that is connected to the foramen of Monro?

    <p>Lateral ventricle</p> Signup and view all the answers

    What is the structure located lateral to the frontal horn of the lateral ventricle?

    <p>Caudate nucleus</p> Signup and view all the answers

    What is the function of the Thalamus?

    <p>Relay center between peripheral and higher centers</p> Signup and view all the answers

    What is the name of the structure that resembles a 'Helmet of Darth Vader' in a CT scan?

    <p>Pons</p> Signup and view all the answers

    What is the posterior structure to the lateral ventricle?

    <p>Thalamus</p> Signup and view all the answers

    What is the structure composed of three parts?

    <p>Internal capsule</p> Signup and view all the answers

    What is the structure that is medial to the internal capsule and lateral to the lateral ventricle?

    <p>Caudate nucleus</p> Signup and view all the answers

    What is the name of the structure that is part of the basal ganglia?

    <p>Caudate nucleus</p> Signup and view all the answers

    What is the structure that is the largest in the diencephalon?

    <p>Thalamus</p> Signup and view all the answers

    What is the structure that is divided into three parts: Anterior limb, Genu, and Posterior limb?

    <p>Internal capsule</p> Signup and view all the answers

    Which artery does not contribute to the Circle of Willis?

    <p>Middle Cerebral Artery</p> Signup and view all the answers

    What is formed when the vertebral arteries converge?

    <p>Basilar Artery</p> Signup and view all the answers

    What is the collective name for the putamen and globus pallidus?

    <p>Lentiform nucleus</p> Signup and view all the answers

    Which figure shows the sagittal MRI of the Fourth Ventricle?

    <p>Figure 38</p> Signup and view all the answers

    What is the shape of the fourth ventricle in a CT scan?

    <p>Triangular or diamond-shaped</p> Signup and view all the answers

    What type of view is shown in Figure 48?

    <p>Anterior to Posterior View</p> Signup and view all the answers

    Where is the caudate nucleus located in relation to the internal capsule?

    <p>Medial to the internal capsule</p> Signup and view all the answers

    What is the name of the artery that splits off from the basilar artery?

    <p>Posterior Cerebral Artery</p> Signup and view all the answers

    What is the name of the space between the cerebellum and medulla?

    <p>Cisterna magna</p> Signup and view all the answers

    What is the shape of the lateral ventricle in an MRI scan?

    <p>Butterfly-shaped</p> Signup and view all the answers

    Which figure shows the MRA, Coronal arterial anatomy of the brain?

    <p>Figure 49</p> Signup and view all the answers

    What is the name of the artery that is formed after the vertebral arteries converge?

    <p>Basilar Artery</p> Signup and view all the answers

    What is the name of the structure that separates the two hemispheres of the brain?

    <p>Central sulcus</p> Signup and view all the answers

    Which figure shows the Axial arterial anatomy of the brain?

    <p>Figure 39</p> Signup and view all the answers

    Which type of scan is better suited for distinguishing the putamen and globus pallidus?

    <p>MRI scan</p> Signup and view all the answers

    What is the name of the artery that arises from the anterior communicating artery?

    <p>Anterior Cerebral Artery</p> Signup and view all the answers

    What is the name of the structure that contains the cranial nerves III-XII?

    <p>Brainstem</p> Signup and view all the answers

    What is the term for the combination of the putamen and globus pallidus?

    <p>Lentiform nucleus</p> Signup and view all the answers

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