Which of the following has been linked to early sexually intimate behavior in girls?

All of the following are proposed reasons for the decline in teen pregnancies over the last two decades EXCEPT:

Explain why it is important to achieve respirations and tidal volumes that are as consistent as possible during CT interventional studies?                                                                                                              [3]

Explain the importance of CT scanning protocols in clinical practice.                                   [4]                          

Explain the protocol you will use for CT neuro imaging on patients who present with trauma and justify your reasons.                                                                                                                             [5]                                                              

A 65-year-old male patient presents with neurological deficits (slurred speech and loss of movement) and has been referred to the CT department for a post contrast brain scan. The radiologist trusts your expertise and justifies the request form for you to perform the procedure.1.1.1 Given the clinical indications, which protocol would you use on this patient and justify your decision?                                                                                                                          [5]                                                                                                                                  1.1.2 In a table form, write the full technical and radiological protocol you identified in the above question.                                                                                                                      [15]                                       

Using the CT number or Hounsfield unit formula, calculate the CT number for air if its attenuation is 0 and the attenuation coefficient of water is 1.                                                      [6]

Describe the four phases of the CT-guided intervention procedure.                                                 [4]   

 How is a sinogram formed during CT imaging                                                                    [5]

Name the two terminal branches of the left coronary artery: A. [BLANK-1] B. [BLANK-2]