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by [email protected] » Sun Mar 22, 2009 8:14 am
10. Magnetic resonance imaging – a noninvasive diagnostic procedure – can be used to identify blockages in the coronary arteries. In contrast to angiograms – the invasive procedure customarily used – MRI’s pose no risk to patients. Thus, to guarantee patient safety in the attempt to diagnose arterial blockages, MRI’s should replace angiograms in all attempts at diagnosing coronary blockages.
Which of the following, if true, would most support the recommendation above?
(A) Angiograms can be used to diagnose conditions other than blockages in arteries.
(B) MRI’s were designed primarily in order to diagnose blockages in the coronary arteries.
(C) Angiograms reveal more information about the nature of a blockage than an MRI can.
(D) An MRI is just as likely as an angiogram to identify an arterial blockage.
(E) Some patients for whom an angiogram presents no risk are unwilling to undergo an MRI.
D
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by crossingfingers » Sun Mar 22, 2009 8:35 am
Conlusion - Thus, to guarantee patient safety in the attempt to diagnose arterial blockages, MRI’s should replace angiograms in all attempts at diagnosing coronary blockages.

(A) Angiograms can be used to diagnose conditions other than blockages in arteries. - WEAKEN
(B) MRI’s were designed primarily in order to diagnose blockages in the coronary arteries. Lets Keep this
(C) Angiograms reveal more information about the nature of a blockage than an MRI can. - WEAKEN
(D) An MRI is just as likely as an angiogram to identify an arterial blockage. - Lets keep this
(E) Some patients for whom an angiogram presents no risk are unwilling to undergo an MRI. - at worst it weakens the conclusion

out of B and D - D says that MRI has the same probability to find a blockage and from the evidence in the argument we clearly know that MRI is un-invasive. So D.

Hope it helps.
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by thought » Thu Apr 02, 2009 8:22 pm
My phrasing of the argument/recommendation: Because MRIs pose no risk to patients, they should replace angiograms in all attempts at diagnosing coronary blockages.

I agree with above, it comes town to B vs. D.

(B) MRI’s were designed primarily in order to diagnose blockages in the coronary arteries.

B supports the recommendation BUT even through MRIs were designed for this, they could be less effective than angiograms. (Bad design)

(D) An MRI is just as likely as an angiogram to identify an arterial blockage.

D supports the recommendation -- you lose nothing by using MRIs, the likelihood of success is the same as an angiogram.
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by kanha81 » Fri May 01, 2009 10:36 pm
thought wrote:My phrasing of the argument/recommendation: Because MRIs pose no risk to patients, they should replace angiograms in all attempts at diagnosing coronary blockages.

I agree with above, it comes town to B vs. D.

(B) MRI’s were designed primarily in order to diagnose blockages in the coronary arteries.

B supports the recommendation BUT even through MRIs were designed for this, they could be less effective than angiograms. (Bad design)

(D) An MRI is just as likely as an angiogram to identify an arterial blockage.

D supports the recommendation -- you lose nothing by using MRIs, the likelihood of success is the same as an angiogram.
My question is why not [spoiler][/spoiler] between [spoiler][/spoiler] & [spoiler][D][/spoiler]

[spoiler][/spoiler] basically solidifies the conclusion like hitting a HOME RUN whereas [spoiler][D][/spoiler] says it's as likely as angiogram. OK so if the successive rate is equally likely, then why not Angiogram?
Want to Beat GMAT.
Always do what you're afraid to do. Whoooop GMAT
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by thetrystero » Fri May 08, 2009 12:41 am
10. Magnetic resonance imaging – a noninvasive diagnostic procedure – can be used to identify blockages in the coronary arteries. In contrast to angiograms – the invasive procedure customarily used – MRI’s pose no risk to patients. Thus, to guarantee patient safety in the attempt to diagnose arterial blockages, MRI’s should replace angiograms in all attempts at diagnosing coronary blockages.
Which of the following, if true, would most support the recommendation above?
(A) Angiograms can be used to diagnose conditions other than blockages in arteries.
(B) MRI’s were designed primarily in order to diagnose blockages in the coronary arteries.
(C) Angiograms reveal more information about the nature of a blockage than an MRI can.
(D) An MRI is just as likely as an angiogram to identify an arterial blockage.
(E) Some patients for whom an angiogram presents no risk are unwilling to undergo an MRI.
My answer: D

Situation:
1. MRI & angiogram are two possible procedures to diagnose coronary blockages
2. MRI poses no risk to the patient.
3. Angiogram poses some risk to the patient.
Therefore, use MRI in place of angiogram for all diagnoses of coronary blockages

A: irrelevant. we are concerned only with coronary blockages
B: it's primary purpose is irrelevant since it tells us nothing about MRI's efficacy relative to angiogram. we need only know that it "can" diagnose coronary blockages.
C,E: these statements, if true, would favor angiogram over MRI
D: probably the only concern with the recommendation would be that MRI isn't as effective as angiogram. This statement puts this to concern to rest.
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by samanthaJ79 » Sun May 15, 2016 6:01 am
(D) An MRI is just as likely as an angiogram to identify an arterial blockage. - Lets keep this
My answer
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